Crusher jaw-plate.



W. S. McKEE & F. E. JOHNSON.

CRUSHER JAW PLATE.

APPLICATION man ran. 26. 1916.

1,187,161. Patented June 13, 1916.

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WITNESS INVENTURS 4 V 7 Walter/Sflfl- -Kee.

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/ u I ATTORNE Z WALTER s. McKEE, or CHICAGO, inmNorsfAND rRAN KEfJoHNsoN, or SALT LAKE CITY,UTAH, ASSIGNORS TO AMERICAN MANGANESE STEEL COMPANY, or AUGUSTA,

MAINE, A CORPORATION OF MAINE.

CRUSHER JAW-PLATE.

. Specification of Letters Patent] Pat Ht d J 119,13; 1916,

Original application filed January 25, 1915, Serial No. 4,988. iiiviaed and this application filed February 26,1916. Serial No. 80,562. 1

T 0 all whom it may concern:

Beit' known that we, WALTER S. M KEE, a citizen of the United States, and a resident of Chicago, in the county of Cook and Stateof Illinois, and FRANK E. JoHNsoN, a citizen'of the United States, and a resident of Salt Lake City, in the county of Salt Lake and State of Utah, have made and invented certain new and useful Improvements in Grusher'Jaw-Plates, of which the following is a specification. I

This invention relates to crusher aw plates, and more particularly to that type of plate which is made up of a plurality of replaceable sections,

This application is a division of our copending application Ser. No. 4088, filed January 25, 1915.

An object of the present invention is to provide a reinforcing back which is so constructed as to engage the several sections which go to make up each crusher jaw plate and hold them against transverse shifting, thereby maintaining the ribs or corrugations of the several sections in proper alinement.

A further object is to so arrange the several sections and reinforcing back that the sections are held against moving one in front of the other, as well as being locked against transverse or lateral movement.

The arrangement is such that the crusher jaw plate may be easily and quickly'removed from the crushing machine and the various sections interchanged in an easy and efficient manner.

Other objects and advantages will appear as the description proceeds, wherein it is to be understood that changes in the precise embodiment of our invention can be made within the scope of what is claimed, without departing from the spirit thereof.

The-preferred embodiment of our invention is disclosed in the accompanying drawing, wherein:

Figure 1 is a view in front elevation of the crusher jaw plate, disclosing the characteristic features of our invention, portions of the jaw plate sections being broken away to more clearly disclose the several structural features; Fig. 2 is a view in side elevation of the foregoing; Fig. 3 is a view in end elevation thereof; Fig. 4 is a view in end elevation of a slightly modified form of crusher jaw plate, and Fig. 5 is a somewhat further modified form of crusher jaw plate. I

Referring specifically to the several views, the crusher jaw plate disclosed in Figs. 1 to 3, 'inc1usive,.is formed of the several'interchangeable sections 8, 9 and 10, and a top wedge-shaped section 11. Theseveral sections 8, 9 and 10 are each identical and are 1 provided with the longitudinally extending recesses 12, preferably formed alongthe sides of the several sectio-nsand undercut, as disclosed in Fig. 3. A reinforcing back 13 is provided with the flanged edges 14, .which project one toward the other, corresponding to the bevel of the undercut recesses 12. The spacing of the flanged edges 14 of the back is substantially equal to the greatest width of the sections, so that the back and several sections assembled therein are adapted to fit snugly and securely within the compartment provided therefor in the crushing machine. The reinforcing back with its flanged edges is formed of relatively thin material,'such as sheet metal, and forms a shell container and holds the sections in place. a 7

After the sections have been inserted between the sides or flanged edges of the reinforcing back, they are firmly held against lateral movement and also prevented from moving one in front of the other. When it is desired to remove the lowermost section after it has become excessively worn, this is conveniently accomplished by sliding the end section from between the flanged edges of the reinforcing back, moving each section down one space and inserting a new section immediately below the top Wedge-shaped section. In this manner the continuity of the wearing face of the crusher aw plate is preserved, and the greatest amount of wear from each section obtained,

The character of the slots or recesses in the sides of the various sections and the corresponding formation of the flanged edges of the reinforcing back may be varied, as disclosed in Figs. 4 and 5. The crusher jaw plate, illustrated in Fig. {1, is formed with the back plate 16 having outwardly projecting flanged sides 17. These sides, projecting at right angles to the back plate, fit within suitable recesses 18 extending along the sides of the various sections. After the crusher aw plate has been positioned within the crushing machine, the sections are prevented from moving one beyond the other by the top wedge-shaped section.

In those instances where it is advisable to hold the sections in place, even though the jaw plate be removed from the crushing machine, the sides of the back plate project inward, as previously described and illustrated in Fig. 3, and as disclosed in the somewhat modified form of crusher jaw plate illustrated in Fig. 5. In this latter construction, the back plate is provided with sharply beveled sides 19, which positively lock with the undercut sides 20 of the recesses 21, the latter extending along the side edges of the various sections. In each of the crusher jaw plates, as above outlined, the reinforcing back extends across the back of the several sections and around the sides thereof, thus positively holding the several sections together and in alinement.

hat we claim is 1. A removable crusher jaw facing plate,

consisting of a plurality of sections, and a container formed of relatively thin material with outwardly extending sides engaging said sections.

2. A removable crusher jaw facing plate,

. consisting ofv a plurality of interchangeable WALTER S. MOKEE. Witnesses:

NELLIE C. BAsoN, EUGENE G. BAUER. Signed at Butte, in the county of Silver Bow, and State of Montana, this 25th day of January, 1916.

FRANK E. JOHNSON.

Witnesses:

JAMES F. BEDDING, M. FIELD.

comes of this patent may be obtained for five cents each, by addressing the commissioner of Patents. Washington, D. G." 

